Presents Einstein's writings from the final period of his work in Switzerland. The material in this volume documents Einstein's search for a relativistic theory of gravitation, a search that ended in Berlin in the fall of 1915 with the completion of the general theory of relativity.

Publisher's Foreword ix Preface xi List of Texts 1.Manuscript on the Special Theory of Relativity, 1912-1914 3 2."Thermodynamic Proof of the Law of Photochemical Equivalence," January 1912 "Thermodynamische Begrundung des photochemischen Aquivalentgesetzes" Annalen der Physik 37 (1912) 89 3."The Speed of Light and the Statics of the Gravitational Field," February 1912 "Lichtgeschwindigkeit und Statik des Gravitationsfeldes" Annalen der Physik 38 (1912) 95 4."On the Theory of the Static Gravitational Field," 23 March 1912, and "Note Added in Proof" "Zur Theorie des statischen Gravitationsfeldes," and "Nachtrag zur Korrektur" Annalen der Physik 38 (1912) 107 5."Supplement to My Paper: 'Thermodynamic Proof of the Law of Photochemical Equivalence'," May 1912 "Nachtrag zu meiner Arbeit: 'Thermodynamische Begrundung des photochemischen Aquivalentgesetzes'" Annalen der Physik 38 (1912) 121 6."Response to a Comment by J. Stark: 'On an Application of Planck's Fundamental Law ...'," 30 May 1912 "Antwort auf eine Bemerkung von J. Stark: 'Uber eine Anwendung des Planckschen Elementargesetzes ...'" Annalen der Physik 38 (1912) 125 7."Is There a Gravitational Effect Which Is Analogous to electrodynamic Induction?" July 1912 "Gibt es eine Gravitationswirkung, die der elektrodynamischen Induktionswirkung analog ist?" Vierteljahrsschrift fur gerichtliche Medizin an offentliches Sanitatswesen 44 (1912) 126 8."Relativity and Gravitation. Reply to a Comment by M. Abraham," 4 July 1912 "Relativitat und Gravitation. Erwiderung auf eine Bemerkung von M. Abraham" Annalen der Physik 38 (1912) 130 9.Comment on Abraham's Preceding Discussion 'Once Again, Relativity and Gravitation'," August 1912 "Bemerkung zu Abrahams vorangehender Auseinandersetzung 'Nochmals Relativitat and Gravitation'" Annalen der Physik 39 (1912) 135 10.Research Notes on a Generalized Theory of Relativity, ca. August 1912 136 11."Some Arguments for the Assumption of Molecular Agitation at Absolute Zero" (with Otto Stern), December 1912, and "Remark Added in Proof "Einige Argumente fur die Annahme einer molekularen Agitation beim absoluten Nullpunkt" and "Anmerkung bei der Korrektur" Annalen der Physik 40 (1912) 137 12."Thermodynamic Deduction of the Law of Photochemical Equivalence," 27 March 1913 "Deduction thermodynamique de la loi de l'equivalence photochimique" Journal de physique 3 (1913) 146 13.Outline of a Generalized Theory of Relativity and of a Theory of Gravitation (with Marcel Grossman), before 28 May 1913 Entwurf einer verallgemeinerten Relativitatstheorie und einer Theorie der Gravitation Leipzig: Teubner, 1913 151 14.Einstein and Besso: Manuscript on the Motion of the Perihelion of Mercury, June 1913 189 15."Theory of Gravitation," 9 September 1913 "Gravitationstheorie" Schweizerische Naturforschende Gesellschaft. Verhandlungen 96, part 2 (1913) 190 16."Physical Foundations of a Theory of Gravitation," 9 September 1913 "Physikalische Grundlagen einer Gravitationstheorie" Naturforschende Gesellschaft in Zurich. Vierteljahrsschrift 58 (1914) 192 17."On the Present State of the Problem of Gravitation," 23 September 1913 "Zum gegenwartigen Stande des Gravitationsproblems" Physikalische Zeitschrift 14 (1913) 198 18."Discussion" following lecture version of "On the Present State of the Problem of Gravitation" (Doc. 17), 23 September 1913 Physikalische Zeitschrift 14 (1913) 223 19.Lecture Notes for Course on Electricity and Magnetism at the ETH, Winter Semester 1913/1914 2 October 1913-21 March 1914 231 20."Theoretical Atomism," before 21 October 1913 "Theoretische Atomistik" Paul Hinneberg, ed. Die Kultur der Gegenwart. Ihre Entwicklung und ihre Ziele. Part 3, sec. 3, vol. 1, Physik, ed. Emil Warburg. Leipzig: Teubner, 1915 232 21."Theory of Relativity," before 21 October 1913 "Die Relativitatstheorie" Paul Hinneberg, ed. Die Kultur der Gegenwart. Ihre Entwicklung und ihre Ziele. Paul Hinneberg, ed. Part 3, sec. 3, vol. 1, Physik, ed. Emil Warburg, Leipzig: Teubner, 1915 246 22.Discussion remarks following lectures delivered at second Solvay Congress, 27-31 October 1913 264 23."Max Planck as Scientist," 7 November 1913 "Max Planck als Forscher" Naturwissenschaften 1 (1913) 264 24."Supplementary Response to a Question by Mr. Reissner," 11 December 1913 "Nachtragliche Antwort auf eine Frage von Herm Reisser" Physikalische Zeitschrift 15 (1914) 276 25."On the Foundations of the Generalized Theory of Relativity and the Theory of Gravitation," January 1914 "Prinzipielles zur verallgemeinerten Relativitatstheorie und Gravitationstheorie" Physikalische Zeitschrift 15 (1914) 282 26."Comments" on "Outline of a Generalized Theory of Relativity and of a Theory of Gravitation" (the version of Doc. 13 published as an article in Zeitschrift fur Mathematik und Physik), 30 January 1914 Zeitschrift fur Mathematik und Physik 62 (1914) 289 27."On the Theory of Gravitation," 9 February 1914 "Zur Theorie der Gravitation" Naturforschende Gesellschaft in Zurich. Vierteljahrsschrift 59. Part 2, Sitzungsberichte (1914) 291 28."Nordstom's Theory of Gravitation from the Point of View of the Absolute Differential Calculus" (with Adriaan D. Fokker), 19 February 1914 "Die Nordstromsche Gravitationstheorie vom Standpunkt des absolten Differentialkalkuls" Annalen der Physik 44 (1914) 293 29."Method for the Determination of Statistical Values of Observations Regarding Quantities Subject to Irregular Fluctuations," 28 February 1914 "Methode pour la determination de valeurs statistiques d'observations concernant des grandeurs soumises a des fluctuations irregulieres" Archives des sciences physiques et naturelles 37 (1914) 300 30."A Method for the Statistical Use of Observations of Apparently Irregular, Quasiperiodic processes," after 28 February 1914 "Eine Methode zur statistischen Verwertung von Beobachtungen scheinbar unregelmassig quasiperiodisch verlaufender Vorgange" 302 31."On the Relativity Problem," March 1914 "Zum Relativitats-Problem" Scientia 15 (1914) 306